Welded structure of fuel filling container and welded part, and welding method therefor

摘要: A welded structure constituted of a fuel filling container having an opening, and part including pipe-shaped section whose one end is disposed in the opening container. welding fixedly around outer periphery section. The through surface to In structure, includes strength providing layer permeation resistance which are coaxial with radially laminated define annular surface. Additionally, at least inner peripheral portion other formed resisting material.